Hi Don
you have to decide what you want! What does the "nearest surface label" mean? If you are outside of brain do you want to project onto the cortex and find that label? What if you are in the middle of caudate for example?
cheers Bruce
On Fri, 8 Aug 2014, Krieger, Donald N. wrote:
Hi Bruce,
Thanks for responding so quickly. I think it's the volume label I want although honestly, I'm still not confident that I understand the language. The vectors for which I need the associated label(s) can be almost anywhere in the volume of the head. And for each one, I need to get the label(s) for the nearest vector that freesurfer has identified. It would work for my purpose if that label was for the nearest vector on a surface, particularly orig, white, or pial.
Don
Don Krieger, Ph.D. Department of Neurological Surgery University of Pittsburgh (412)648-9654 Office (412)521-4431 Cell/Text
From: freesurfer-bounces@nmr.mgh.harvard.edu [freesurfer-bounces@nmr.mgh.harvard.edu] on behalf of Bruce Fischl [fischl@nmr.mgh.harvard.edu] Sent: Friday, August 08, 2014 11:15 AM To: Freesurfer support list Subject: Re: [Freesurfer] Tool which will return the labels associated with a RAS vector ?
Hi Don
what kind of label do you mean? Volume (aseg) or surface (annot). I guess you could just pick out the aparc+aseg.mgz label and get both.
cheers Bruce
On Fri, 8 Aug 2014, Krieger, Donald N. wrote:
Hi,
I am almost there and now need to produce what you might call an atlas for an individual. I have a large set of current source locations extracted from MEG recordings for each volunteer. They are in the individual's RAS MRI coordinates so I can easily convert them to tkr or another of the coordinate systems used by freesurfer. I then need to find or create a tool to which I can hand that vector and get back the labels which have been assigned to it. Can you see a way to do it with existing freesurfer tools, even if it's awkward?
Thanks,
Don
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